Kegetys' Misc Stuff offers several useful game-related utilities. One of these is version 1.01. of a program called D3D Antilag. Word about this is simply: "Helps reduce input latency (mainly mouse lag) in Direct3D 9 games by limiting the amount of frames rendered ahead. Can also limit the framerate." Thanks GamesDot.Org, where they note how useful this is at combating Windows 7 input lag in The Elder Scrolls V: Skyrim.